Air Plan Approval; KY; Updates to Attainment Status Designations

The Commonwealth of Kentucky, through the Kentucky Division for Air Quality (KDAQ), submitted a revision to the Kentucky State Implementation Plan (SIP) on December 13, 2016. The SIP revision updates, as of October 6, 2016, the description and attainment status designations for geographic areas within the Commonwealth for several National Ambient Air Quality Standards (NAAQS). The updates are being made to conform Kentucky's attainment status tables with the federal attainment status designations made for these areas. The Environmental Protection Agency (EPA) is proposing to approve Kentucky's SIP revision because it is consistent with the Clean Air Act (CAA or Act) and EPA's regulations.